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Allen Brothers A2121 20mm Allenite Thru-Deck Block

Allen Brothers
Model A2121*1
In Stock
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Single Dynamic Through Deck. Our through deck blocks offer frictionless guidance for rope and wire control lines which are required to pass through a deck. Featuring a hard-wearing acetal body shaped perfectly to house the sheave, which results in a performance that you can rely on for adjustable rigging and other highly loaded applications. Available with one or two sheaves and in plain and ball bearing systems to suit a wide variety of applications.


  • Breaking Load: 350kg
  • Fixing Hole Centres: 42mm
  • Length: 54mm
  • Max Line Dia: 6mm
  • Max Working Load: 105kg
  • Weight: 11g